Bobbin.



Patented Fb.27,1917.

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R. FISHER. v

soasm. APPLICATION FILED 056.4. 1915- I MN RAYMOND FISHER, onPHILADELPHIA, PENNSYLVANIA;

IBOIBBIN.

Specification of Letters Patent.

Patented Feb. 27, 1917.

Application filed December 4, 1915. Serial No. 65,121.

To all whom it may concern:

Be it known that I, RAYMoNDFIsHEm'a citizen of the United States,residing at Philadelphia, in the State of Pennsylvania, have invented acertain new and useful Improvement in Bobbins, whereof the follow+ ingis a specification, reference being had to the accompanying drawing.

My invention designed for use with threads which are so far hygroscopicthat increase in the humidity of'th-e atmosphere, beyond that at whichthey are wound, causes them to expand and thus become loose on bobbinsofordinary construction. Such variation in tension is so 'farcharacteristic of artificial silk filaments that it is practi- I callyimpossible to use the entire contents of a bobbin thereof without eitherrewinding it or discarding the remnant left upon the bobbin when it isso far relaxed that it is impossible to continue to operate the bobbin.Moreover, the aforesaid variations in tension cause the thread tofrequently break; so that there is a considerable loss of both time andmaterial in the use of the ordinary bobbins, Which have no means forcompensating for variations in the tension of the thread which theycarry. Therefore, it is the object and effect-of my invention to providea bobbin having automatically operative means to compensate for suchvariations in the tension of the thread carried thereby, which may beoccasioned by changes in 'the'humidity ortempe'ra'ture of the atmospherein'which the'thread is used,

as compared withithat in which the bobbins are wound.

As hereinafter described, my invention includes the provision upon anordinary bobbin or cop of a circumferential series of rods, extendinglengthwise thereon and capable of being resiliently constricted by thethread. For" instance, a wooden bobbin body, of ordinary construction,may be provided at its axially opposite ends' with metal members tosupport the endsflof said rods so that the intermediate portions of saidrodsjare normally presented in spaced relation with the outer surface ofthe body but are constricted toward the latter as the thread is woundthereon and thus continually tend to expand against the tension of thethread and compensate therefor so as to automatically continually holdthe convolutions of thread in proper operative conn'cction with thebobbin until the thread is entirely unwound from the bobbin. m'Myinvention includes the various novel features of construction andarrangement hereinafter more definitely specified.

In the drawing :Figure I is a plan view of a bobbin convenientlyembodying my in vention, with thread thereon.

Fig. II 'is an elevation of the bobbin shown in Fig. I.

Fig. 'III is a vertical sectional view of said bobbin.

Fig. IV is an inverted plan view of said bobbin. 7

In saidfigu res; the bobbin body 1 is of the ordinary shape employedwith hosiery machines and has the axial opening 2 to receive the drivingspindle having lugs for engagement in the recesses 3 at the bottom ofsaid body. Said bobbin body 1 has at the upper end thereof the metalliccentral bearing member 5 having the radial openingsv 7 to receive theupper ends of the springrods 8, which are removably fitted therein Thelower ends of-said spring rods 8 are removably fitted in the radialopenings 10 in the metal annular plate 11, at the bottom of said bobbinbody 1, in which they are conveniently secured by the set screws12. Saidplate 11 is secured in concentric relation with said (bobbin body 1 bythe screws 14, (extending into said body through said plate, in whichtheirheads are countersunk) and. has radial notches 15 registering withsaid recesses 8 in said body 1 and adapted to engage the radial flangeof the driving spindle aforesaid.

It may be observed that when the bobbin is empty, the rods 8 extend inthe spaced relation, with respect to thebobbin'body, indicatedby dotted.lines in' Fig. III; but, when the bobbin is charged with thread 18, asshown in Figs. I and II,.said rods are constricted toward said bodyunder tension of the thread and, continually tend to expand inengagement therewith and to compensate for variations in the tension ofthe thread.

Although I find'it convenient to detachably connect the resilient rods 8with the bobbin, as above described, to facilitate the replacement ofsaid rods if they become bent or scarred so as to interfere with theirproper use, however, it is obvious that they may be otherwise detachablyengaged or permanently connected with the bobbin body, the onlyessential being that said body shall have mean for automaticallyexpanding in opposition to the tension of the thread so as to maintain aproper frictional engagement between the bobbin and the thread.Moreover, although I have shown a bobbin body of the ordinary truncatedconical form, it is to be understood that my invention may be embodiedin a thread carrier of any convenient shape or construction.

' Therefore, I do not desire to limit myself to the precise details ofconstruction or arrangement herein set forth, as it is obvious thatvarious modifications may be made therein without departing from theessential features of my invention as defined in the appended claims.

I claim 1. In a thread carrier, the combination with a conical woodenbody having an axial opening for a driving spindle; of a metallicbearing member at the apex of said body, having radial openings; anannular plate at the base of said body, having radial openings,diametrically opposite notches to receive a projection from said drivingspindle, and openings for attaching means, extending longitudinally withrespect to said body; screws extending through said longitudinalopenings in said plate, rigidly connecting it with said body; acircumferential series of resilient metallic rods, each extendinglongitudinally with re spect to'said body and having its ends fitted inthe radial openings, respectively in said bearing member and said plate;said rods normally extending in spaced relation with the outer surfaceof said body but adapted to be constricted toward the latter by thetension of the thread encircling said carrier; and set screws in saidring detachably holding the respective ends of said rods in said 2% In athread carrier, the combination with a tubular axial body having anaxial opening for a removable driving spindle; of a metallic bearingmember at the apex of said body, having radial openings; an annularplate at the base of said body, having radial openings, diametricallyopposite notches to' receive a projection from said driving spindle, andattaching means, rigidly connecting said plate with said body; acircumferential series of resilient metallic rods, each extendinglongitudinally with respect to said body and having its ends fitted inthe radial openings, respectively in said bearing member and said plate;said rods normally extending in spaced relation with the outer surfaceof said body but adapted to be constricted toward the latter by thetension of the thread encircling said carrier; the intermediate portionof said body'serving as a stop support for said rods; and

means detachably holding the ends of said rods in said ring. 7

3. In a thread carrier, the combination with a body of circular crosssection; of a metallic bearing member at one end of said body, havingopenings; a plate at the other end of said body, having openings; acircumferential series of resilient metallic rods, each extendinglongitudinally with respect to said body and having its endsstationarily fitted in the openings, respectively in said bearing memberand said plate; said rods normally extending in spaced relation with theouter surface of said body but adapted tobe constricted toward thelatter by the tension of the thread encircling said carrier, withoutmovement of the ends of said rods.

4:. In a thread carrier, the combination with a body; of acircumferential series of resilient metallic rods, each extendinglongitudinally with respect to said body and having its ends rigidlyconnected thereto; said rods normally extending in spaced relation withthe outer surface of said body but adapted to be constricted toward thelatter by the tension of the thread encircling said carrier, withoutmovement of the ends of said rods.

5. In a thread carrier, a rotary body hav ing a circumferential seriesof rods extending longitudinally thereon, adapted to be resilientlyconstricted and thereby automatically radially moved intermediate oftheir ends by the thread encircling said carrier; and means rigidlyholding both ends of said rods in stationary relation to the axis ofsaid carrier during such movement.

6. In a rotary thread carrier; automatically expansible means adapted tobe resiliently constricted by the tension of the thread encircling saidcarrier, including a series of rods which are thus automaticallyradially movable intermediate of their ends, while held in invariablerelation with the axis of said carrier at their ends; and means arrangedto hold the ends of said rods in stationary relation to'the axis of saidcarrier during such movement;

' 7. In a rotary thread carrier; a series of conically arranged rods,each normally outwardly curved, in a radial plane, and radially movableintermediate of its ends; and a tubular axial body having means arrangedto hold the ends of said rods in immovable relation with the axis ofsaid carrier during such movement; said axial body having an axialopening and means to rotatably engage a driving spindle detachablyfitted to said axial opening.

8. In a rotary thread carrier; a series of conically arranged rods, eachnormally outwardly curved, in a radial plane, and radially movableintermediate of its ends; and a tubular axial body having means arrangedto hold the ends of said rods in immovable relation with the axis ofsaid carrier during such movement.

9. In a rotary thread carrier; a series of conically arranged rods, eachnormally outwardly curved, in a radial plane, and radially movableintermediate of its ends; a conical axial body forming a stop limitingthe inward movement of said rods; and means on said body rigidlysupporting the ends of said rods.

10. In a rotary thread carrier; a series of conically arranged rods,each normally outwardly curved, in a radial plane, and radially movableintermediate of its ends; a 15 conical axial body forming a stoplimiting the inward movement of said rods; and means on said bodydetachably supporting the ends of said rods.

In testimony whereof, I have hereunto signed my name at. Philadelphia,Pennsyl- Vania, this twenty-fourth day of November, 1915.

RAYMOND FISHER.

Witnesses:

ROBERT E. BECK, JOHN A. LAFFERTY.

Copies of this patent may be obtained for five cents each, by addressingthe "(iommissionerof Patents.

7 Washington, I). G.

